A very popular game played with a tennis ball on a roller hockey court with four people, two on each team. It is played at night under the lights where the competitors try to score goals by throwing the ball into the hockey goal while the other team tries to deny him. Scoring is very difficult and often requires some sort of juke to get by the defender and hurl the ball towards the goalie while also staying behind the throwing line. It was invented in Eugene, Oregon where all the best jukeballers unite and play for the jukeball championship each summer.